noble



2 Sheets-Sheet 1.

(No Model.)

N. J. NOBLE. VENTILATION MEGHANISM POR LOCOMOTIVB 0R OTHER BOILBRFURNAGBS.

Patented Deo. 1895.

AN nREw D GRAHAM. PHDTUMTMQWASHINGTOND C (No Model.) v l 2 Sheets-Sheet2.

- N. J. NOBLE.

VENTILATION MECHANISM FOR LOGOMOTIVE 0R OTHER BOILER- l FURNAGBS. No.552,196.

mmm

ANUHEW BIRMMVIA PHDm-Lmlo-WASHINGTON. D C

u Patented 1380.31, 1895.

motive-boiler.

UNITED STATES PATENT UEEICE.

NEWVELL-.I AS. NOBLE, OF STATE CENTRE, IOTVA,.ASSIGNOR OE ONE-HALF TO A..IUDSON SHOMBER, EDWARD II. SCIIILLING, AND THEODORE ENGLE,

OF SAME PLACE.

VENTILATION MECHANISM FOR LOCOMOTIVE OR OTHER BOILER FURNACES.

SPECIFICATION forming part of Letters Patent No. 552,196, dated December31, 1895.

Application iiled December 7, 1894. Serial No. 531,163. (No model.)

To all whom it may concern.-

Beit known that I, NEWELL JAS. NOBLE, a citizen of the United States ofAmerica, residing at State Centre, -in the county of Marshall and Stateof Iowa, have invented anew and useful Ventilation Mechanism forLocomotive or other Boiler Furnaces, of which the following is aspecification.

The object of this invention is to provide improved means for returningthe heat contained in escaping gas or foul air to a room, building,forge, furnace, stove, or fire-box whence it emanates, andsimultaneously therewith permitting the escape of the gas or foul airinto the atmosphere with the temperature thereof greatly reduced.

This invention consists in the construction, arrangement and combinationof elements, hereinafter set forth, pointed out in my claims andillustrated in the accompanying drawings, in whichl Figure 1 is alongitudinal sectional elevation showing my improvement applied to alocomotive-boiler. Fig. 2 is a transverse sectional elevation on theindicated line 2 .2 of Fig. l. Fig. 3 is a transverse sectionalelevation on the indicated line 3 3 of Fig. 1. Fig. /1 is a frontelevation of the apparatus, the casing being broken away. Fig. 5 is adetail View illustrating the formation of joints in the apparatus.

In the construction of the apparatus as shown, the numeral 10 designatescurved grate-bars mounted in a fire-box 11 of a loco- A fuel-door 12 isprovided in the front of the fire-box above the grate-bars 10. A door 13is provided in the front of the fire-box immediately beneath thegrate-bars 10. The fire-box is formed with abottom 14 inclineddownwardly and forwardly, and an ashdoor 15 is provided in the front ofthe firebox adjacent to said bottom, whereby the ashes may be withdrawnfrom the said iirebox. A series of smoke-tubes 16 are mounted in theupper portion of the boiler 17 and extend from the nre-box, above thegrate-bars, 10, to the opposite end of the said boiler. Fresh-air ordraft hues 1S are mounted in the lower portion of the boiler 17 andextend from the hre-box, below the grate-bars 10, to the opposite end ofsaid boiler. A casing 19 is fixed to and projects horizontally forwardfrom the front end of the boiler 17, the connection between said casingand boiler being formed with angle-plates 2O 21, bolted to the same andto each other. A partition 22 is positioned in the casing 19 and extendshorizontally from a point adjacent to the forward end of said casing toa point near the rear end of the casing and from thence extends on aninclined plane to a connection with boiler 17 near the smoke-stack 23.

The casing is formed in sections A B C, detachably connected by means ofangle-plates 2O 21, bolted thereto and to each other. An aperture isformed in the upper portion of the casing 19 adjacent to the boiler, andthe smokestack 23 extends vertically through said aperture. A track 24is supported on the casing 19 about the aperture and surrounding thesmoke-stack, and a funnel 25 is mounted on said track, which funnel isopen at one side thereof.

Antifriction-rollers 2G 27 are fixed to the lower edge portion of thefunnel 25 and engage above and below the track 211 to support and steadysaid funnel in the travel thereof. A tail-board or vane 28 is fixed toand extends outwardly from the funnel 25. A dampervalve 29 is positionedin the rear of the smoke- Y stack 23 and opens to the funnel, whichvalve is connected to an operating-rod 30. An exhaust or steam pipe 31is mounted in and communicates with the boiler and smoke-stack. Apartition 32 is mounted in the casing 19. One end of the partition 32 isfixed to the boiler between-the iues 16 18, and the opposite end of saidpartition is fixed to the forward portion of the lower edge of thesmokestack 23.

The body or central portion I) of the partition 32 curves around theforward end of the partition 22 approximately midway between said endand the forward end of the casing. The portion of the partition 32 lyingabove the partition 22 is closely corrugated or folded to subdivide thespace traversed thereby into a series' of connected grooves above andbelow the partition 32. The space above the partition 32 communicates atone end with the IOO atmosphere through the aperture in the casingleading to the funnel, and the space below the upper portion of saidpartition opens at one end to the smoke-stack.

The portion of the partition 32 below the partition 22 is corrugatedcoarsely to subdivide the space traversed thereby into a series ofconnected grooves of greater transverse area than the grooves above thepartition 22. The space below the lower portion of the partition 32opens at one end to the fresh-air fines 18 in the boiler, andcommunicates at the other end with the forward end of the space abovethe upper portion of said partition, thus forming' a continuousfresh-air conduit F from the funnel to the lire-box. The space above thelower portion of the partition 32 opens at one end to the smoke-tubes 16and communicates at its forward end, around the end of the partition 22,with the forward end of the space below the upper portion of saidpartition 32, thus forming a continuous conduit H for the passage ofsmoke and gases from the fire-box to the smoke-stack.

A fan 33 is mounted for rotation in the section C of the casing 19 on ashaft S-i vertically positioned in said casing and driven by gearing toa prime mover. (Not shown.) |The fan is so constructed and arranged asto cause a current of air to pass through the conduit F into thefire-box beneath the grate-bars 10. The corrugated portions of thepartition 32 are retained in iixed relations by bolts 35 36, positionedtherein and in the casing 19, transversely thereof, and collars 37mounted on said bolts and engaging the vertical portions of thecorrugations, Fig. 2.

The partition 32 may be formed in sections with overlapping ortelescoping end portions, and pairs of bolts 35 36 with the accompanyingcollars are mounted in the end portions of the sections to steady andsupport the same, Fig. 5.

ln practical use atmospheric air is drawn and driven through the funneland conduit F into the fire-box beneath the grate-bars by way of theiiues 18, and supplying draft to the fire drives the smoke and hot gasesout of the fire-box through the tubes 16 and conduit H to and throughthe smoke-stack. The juxtaposition of the air-passages and smokepassagesprovides for the equalization of the respective temperatures of thefresh air and smoke and insures a great saving of fuel by utilizing theheat which otherwise might be carried away with the smoke and gases anddischarged through the smoke-stack.

Vhen it is desired to supply the fire-box with fuel the damper-valve 29is opened and the draft through the smoke-stack increased thereby, thedraft beneath the grate bars 10 being thus correspondingly diminished.

When the engine is at rest the draft through the smoke-stack isincreased by permitting a flow o f steam from the boiler to saidsmokestack through the pipe 31.

The vane or tail-board 2S holds the funnel in the wind at all times, soas to insure the entrance of natural air-currents to the said funnel.

I claim as my invention- 1. In a locomotive boiler, the combination of aboiler having a set of upper tubes for smoke conveyance, a set of lowertubes for fresh air conveyance, a iire box communicating with all ofsaid tubes at one end, grate bars located in said fire box between saidsets of tubes, a fuel door in the fire box above the grate bars, acleaning door in the iire box below the grate bars, an ash door in thelower portion of said iire box, a casing fixed to and extendinghorizontally forward from the front of said boiler and communicatingwith the forward ends of the tubes therein, a partition in said casingpartially dividing the same into two sections which communicate at thefront of the said casing, a partition 32, corrugated for portions of itslength, mounted in said casing and subdividing the same to form freshair and smoke conduits communicating with the fresh air and smoke tubesin the boiler, a funnel feeding air to the fresh air conduit, a smokestack receiving and discharging smoke from the smoke conduit, a blastfan mounted in the fresh air conduit, and means for adjusting saidfunnel, as set forth.

2. In an apparatus of the class described, a casing having an aperturein the top of one end portion thereof, a partition longitudinallypositioned in said casing and extending from one end nearly to the otherend thereof, a partit-ion 32 in said casing, corrugated portions in saidpartition 32, a series of bolts positioned in and transversely of saidcorrugated portions, and a series of collars mounted on said boltsbetween the corrugations, as set forth.

3. In an apparatus of the class described, a casing providing smoke andfresh air conduits, and provided with an aperture communicating withboth of said conduits, a smoke stack mounted in said aperture andclosing said smoke conduit, a funnel mounted about said aperture andopen at one side, a track supported by said casing and supporting saidfunnel, antifriction rollers connecting the funnel and track, a Windvane on said funnel, a damper valve in the smoke stack, and a steam pipeleading into said smokestack, as and for the purposes set forth,

NEWELL JAS. NOBLE. Witnesses EDWARD H. SCHILLING, ENocH WILLIAMS.

IOO

IIO

